Germ-proof water-filter



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C. A, CRIQUI. GERM PROOF WATER FILTER. No. 511,757. PatentedJan. 2, 1894.

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Nirnn raras Arniv'r @tirreno CHARLES A. ORIQUI, OF ST. JOSEPH, MISSOURI.

GERM-PROOF WATERFlLTER.

SPECIFICATION forming part of Let-tersPatent No. 511,757, dated January 2, 1894. Application filed January 23,1893. SerialNo.459.401. No model.)

To @ZZ whom, t may concern:

Be it known that I, CHARLES A. CRIQUI, of St. Joseph, Buchanan county, Missouri, have invented certain new and useful Improvements in GernrProof W'ater-Filters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in filters, for removing sediment and other impurities from-water and other liquids, and the objects of my invention are to produce an efficient apparatus for this purpose, which is simple, durable and inexpensive of construction, whichis provided with an automatic and effective air valve, to induce the free flow of water, and also to provide a top or cover, which can be readily removed from the upper end of the filter to give access to the interior of said filter, when necessary or desirable.

To the above purposes my invention consists in certain peculiar and novel features of construction and arrangement as will be hereinafter fully described and claimed.

In order that my invention may be fully understood, I will proceed to describe it with reference to the accompanying drawings, in which- Figure l, represents a side elevation of a filter, embodying my improvements. Fig. 2, represents a vertical section of the saine, taken on the line -oo of Fig. 1. Fig. 3, represents a top plan view of the filter shown in Fig. 1.

In the drawings, 1 designates the body-portion of the filter, which is shown as of cylindrical form, but which may be of any other shape desired, without departing from the essential spirit of the invention. The lower end of this body portion is exteriorly screwthreaded to engage the interior threads of a vertically and upwardly extending flange 3, of a casting 2, the horizontal portion 4 of which closes the lower end of the body-portion of the lter. An opening 5 is provided centrally'of the said horizontal portion et of the casting, and an annular and frusto-couical guide wall 6 extends upwardly from said horizontal portion at of the casting, and marginally surrounds the opening 5 therein. The casting 2, is also provided with a marginally depending ange 7 which is screw-threaded on its inner side to engage the exterior screwthreads of the upper end of the water receptacle 8, the lower end of which is also exteriorly screw-threaded to engage the interior threads of a vertical flange lO of a casting 9, the horizontal portion 1l of which forms the bottom of the lower receptacle 8. The horizontal portion 1l of said casting 9, extends outward beyond the vertical flange 10, and is secured by bolts, or in any other suitable manner to a table (not shown) or other desirable support.

An opening 12 extends horizontally through the lower end of the body-portion of the filter and also through the upwardly extending flange 3 of the casting 2,and is screw-threaded to receive the threaded end of the feedpipe 13, the said feed-pipe being connected up to the supply-pipes of the water-supply system, in the usual manner. A similar opening 14 is provided in the opposite side of the body-portion of the'filter, and which also extends through the vertical flange of the cast! ing 2, and is screw-threaded to receive the threaded end of the discharge faucet 15, of the usual construction.

The upper end of the body-portion of the filter, has permanently secured thereto in any suitable manner, the inclosing ring or band 16, which is provided at suitable intervals with the outwardly extending and parallel sets of vertical ears 17 between which are pivoted or hinged the bolts 18.

19 designates the top or cover of the lter which is dome-shaped or arched, and is provided with the depending and vertical flange 2O at its lower margin, which fits snuglysvithin the upper end of the body-portion of the filter, and is also provided at the upper end of the depending flange 20, with the horizontal and outwardly extending flange 21, which projects beyond the outer margin of the upper end of the body-portion of the filter, and is provided in its under side with the annular recess 22 which is of inverted frustumshape in vertical cross-section. A rubber gasket or ring 23 is placed within said recess and rests upon the upper end of the bodyportion of the filter. The object in having the recess of the shape described, is to prevent the rubber gasket or ring from dropping out of the recess 22 when the top or cover is removed from the filter.

The outer margin of the flange 21 of the top` or cover 19 is also provided at suitable intervals with the recesses or notches 24C, with which the hinged or pivoted bolts 18 are adapted to register and engage, and the upper projecting ends of said bolts 1S, are engaged by Wing-nuts 25 which are screwed down upon the ange of the top or cover 19 and bind said top or cover firmly upon the upper end of the filter.

Arranged vertically within the body-portion 1 of the filter, is the-filtering wall 25, which is shown as of longitudinal cylindrical form, and which is of any suitable composition or material, sufficiently porous to permit the water to percolate or seep through it and into the inner chamber or cavity 2'5". The filter-,wall 25EL is provided with a closed top 25, which is of the same. material as the vertical wall thereof, and this top is provided with a handle or knob 25d, by which the said filtering-wall may be removed from the filter, when necessary or desirable to clean it. lIt will be seen that a considerable space intervenes between the upper end of the filteringwall and the chamber of the cap or cover for the filter, wherein a quantity of water resides, the pressure from which is sufficient, taken in conjunction with the weight of the lterwall, to prevent the said filtering wall being lifted or displaced, by the pressure of the water around it. The lower end ofthis filterwall is left entirely open, and the lower margin thereof is inserted into a groove 26b in the upper side of the annulus or ring 26a. This ring is of rubber or any other suitable material, which will exclude water and at the same time possess sufficient elasticity to act as a packing, and the said annulus or ring rests directly upon the horizontal portion l of the casting, which forms the bottom of the filter, and said annulus or ring surrounds and ts tightly against the outer side of the upwardly extending flange of the horizontal portion ofthe casting 2. A draw-cock or faucet 26 communicates with the lower part of the water receptacle 8, through which the filtered water may be drawn, when desired.

To insure the free flow of water through the draw-cock or faucet 26 from the receptacle 8, I provide an automatic air-vent or valve 27. This air-vent or valve 27, has the cylindrical body-portion or cup 28, the lower end of which communicates through the pipe 29, with the upper interior portion of the filtered water-receptacle 8. The interior of the cupportion 28fof the air-valve is provided near its lower end with the annular and horizontal shoulder 30, upon which is adapted to rest at times the lower margin of the cylindrical float 3l, the upper end of which is closed and has projecting centrally from its upper side the sleeve 32, in which is secured a rubber plug 33, the upper end of which is rounded at 34 as shown. The object of the said plug 33 will be presently explained.

The upperend of the valvecup 28 is exter-` nally screw-threaded, to receive Vthe interior threads of the depending dange 36, of the cap or cover 35 of the said cup. The flange 36 is of angular form marginally, so that it may be engaged by a nut wrench.

The cap or cover 35 is provided with an' il is interposed between the upper end of thev valve-cup 2S and the cap or cover 35, to make the connection between the cup-portion 28 and the cap or cover 35 therefor, perfectly water tight.

In operation, the parts being arranged in their proper relative positions, the water is permitted to flow through the supply-pipe 13 into the body portion of the filter, and to fill up the space surrounding the filter-wall. Owing to the weight of the said filter-wall the water can not displace the saine and escape into the inner chamber 25h, and the i rubber annulus or ring prevents any water from passing beneath thelower end thereof.

p Should water by any possibility pass beneath said annulus or ring, it would be impossible for it to enter the chamber 25h, because the ring or annulus is forced tightly upon the upwardly extending guide-wall 6. The pure liquid then gradually percolates or seeps its way through the porous filter-wall, and into the inner chamber or cavity 25h, while the sediment and all foreign impurities are retained in the space between the said porous filter-wall and the body-portion l of the filter, and settle toward the lower end thereof. The pure liquid passes through the openings 5 in the casting 2, and into the filtered Water-receptacle 8, where it remains until drawn off through the draw-cock or faucet 26 for use. The sediment is withdrawn from the filter through the draw-cock or faucet 15, when it is desired to partially cleanse the filter, and when a more thorough cleansing is required, the clamping wing-nuts 25 are loosened,and hinged or pivoted bolts are moved outward from engagement with the marginal notches or recesses 24. The top or cover 19 may then be lifted from the upper end 'of thebody-portion of the filter and the filter-wail lifted therefrom and cleansed, and the interior of the lter may also be cleansed. As the receptacle 8 gradually lls with water, the air is forced therefrom through the air valve 27, and as the water enters and fills said cup portion the float rises and the upper rounded end of the rubber plug engages over the adjacent end of the passage and prevents the entrance of air to or overflow and escape of water from the receptacle 8. As the water is withdrawn from the receptacle 8, and allows the iioat to descend,th'e' air enters the passage IOO IIO

37 and passes into the receptacle, causing the water to iiow freely into the draw-cock or faucet 26.

From the above description, it will be seen that I have produced a ilter which is simple, durable and inexpensive of construction, and which is provided with a simple and effective air-valve, to induce the free flow of water, and which is also provided with a top or cover which can be quickly and easily removed or secured upon the lter.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a filter, the Vcombination with a suitable body-portion having a removable top or cover, and having an opening in the bottom of said cylinder, and a porous-filter wall surrounding said opening, of a receptacle located.

beneath said body-portion and communicating therewith, and havinga draw-cock or faucet near its lower end, and an automatic airvalve communicating. with its upper end and having a cup-portion, a oat arranged Within said cup-portion having an upward extension or plug and a cap or cover secured upon said cup-portion and having an upwardly extending hollow extension, and an opening communicating with the passage of said extension, substantially as set forth.

2. In a filter, a suitable body-portion having an opening in its bottom, in combination with a receptacle located below said bodyportion and communicating therewith, and having a draw-cock or faucet near its lower end, and an automatic air-valve near its up per end, having a cup-portion having an annular shoulder in its lower end, a oat having a closed 'upper end located Within said cup-portion and adapted to rest upon said shoulder, and a plug extending upwardly from said float and having a rounded upper end, and a cover screwed upon the upper end of the cup-portion and having an upward tubular extension therefrom, a cup formed in the upper end of said tubular extension, and a small passage connecting the interior of said cup with the interior of said tubular extension, and adapted to be closed by the said rubber plug, substantially as set forth.

In testimony whereof I affix my signature in the presence of two witnesses.

CHARLES A. CRIQUI.

Witnesses:

MAUD FITZPATRICK, M. P. SMITH. 

